Well, to that end the very first sentence of this article is wrong. These weren't carved by ancestors of anyone living today. This was homo erectus, a distant cousin.
The fact that I have healthy half-chinese kids puts the nail in the coffin of that idea... among many other things. It's about as serious an idea as a flat earth or "intelligent design".
It's even shown on a BBC documentary, they get disappointed when DNA analysis disproves their skull-shape "evidence".
https://en.wikipedia.org/wiki/The_Incredible_Human_Journey#2...